ScrollPresenter.VerticalAnchorRatio Property

Definition

Namespace:

Microsoft.UI.Xaml.Controls.Primitives

Determines the vertical position of the ScrollPresenter's anchor point with respect to the viewport. By default, the ScrollPresenter selects an element as its CurrentAnchor by identifying the element in its viewport nearest to the anchor point.

public:
 property double VerticalAnchorRatio { double get(); void set(double value); };

/// [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")]
/// [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")]
/// [get: Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")]
/// [get: Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")]
/// [set: Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")]
/// [set: Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")]
double VerticalAnchorRatio();

void VerticalAnchorRatio(double value);

[Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")]
[Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")]
public double VerticalAnchorRatio { [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")] [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")] get; [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValue(value="ScrollPresenter::s_defaultAnchorRatio")] [Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallback(value="ValidateAnchorRatio")] set; }

var double = scrollPresenter.verticalAnchorRatio;
scrollPresenter.verticalAnchorRatio = double;

Public Property VerticalAnchorRatio As Double

Property Value

Double

double

A normalized value (0.0 to 1.0). The default is 0.0.

Attributes

Microsoft.UI.Xaml.CustomAttributes.MUXPropertyDefaultValueAttribute Microsoft.UI.Xaml.CustomAttributes.MUXPropertyValidationCallbackAttribute

Remarks

A value of 0.0 represents the top-most point within the viewport. A value of 1.0 represents the bottom-most point within the viewport. A value of 0.5f represents the center-most point within the viewport.

When the value is 0.0 or 1.0, the ScrollPresenter applies special behavior when the scroll position is at the start or end of the scrollable area.